Electbode



H. B. CONOVER.

ELECTRODE.

I APPLICATION FILED NOV- 24; I916. 1,322, 163, v Patented Nov. 18, 1919.

. 2 SHEETS-SHEET FIG. 5

7 INVEflNTOR 1 WITNESS-ES WQJM HUGH B. CONOVER, OF STEUBEE'VILLE, OHIO.

- ELECTRODE.

Specification of Letters Patent.

Patented Nov. 18, 1919.

Application filed November 24, 1916. Serial No. 133,153.

To all whom it may concern:

Be it known that I, HUGH B. CoNovER, a citizen of the United States, residing at Steubenville, in the county of Jefferson and State of Ohio, have invented certain new combustible gases.

It has been found that, other conditions being equal, the greater the difference in the active surface of the two terminal electrodes, the greater the intensity will be of the corona discharge obtained. Based upon this discovery. it follows that with a large increase in the intensity of the corona discharge, the speed with which the solids are removed from the dust laden gases can be materially increased and the gases being cleaned can be caused to travel through the apparatus at much higher velocities, so that the capacity and efficiency of the apparatus are materially increased.

One object of my invention is to provide' a corona discharge electrode of simple and cheap construction having great stiffness and rigidity and small active discharge area.

Another object of my invention is to provide a corona discharge electrode of novel construction which is easily and cheaply made and which is adapted to be rigidly suspended in operative posit-ion.

A further object of the invention is the provision of electrodes for use with ex tremely high voltages, having the novel constructions, combinations and arrange-- ments of parts shown in the drawings, to be described in detail hereinafter and to be particularly pointed out in the appended claims.

In the drawings forming part of this specification, Figure 1 is a sectional eleva tion showing one embodiment of my invention.

Fig. 2 is a plan on a larger scale showing details in the construction of the metal disks forming part of my improved electrode.-

Fig. 3 is a transverse section of the disk of Fig. 2.

Fig. 4 is a plan similar to Fig. 2 showing a modified form of disk.

Fig. 5 is-a sectional elevation of the disk of Fig. 4:.

Fig. 6 is a sectional elevation showing a. modified form of discharge electrode made in accordance with my invention.

Fig. 7 is a sectional elevation, similar to that shown in Fig. 6,-showing another modification embodying my invention.

Fig. 8 is a sectional elevation similar to Figs. 6 and 7 and showing a further modified form of discharge electrode.

In the accompanying drawings, referring now to Figs. 1 to 5, a lengthwise vertical, annular .or tubular collecting electrode 2, conveniently made of .a piece of steel pipe or tube is shown, and suspended orotherwise rigidly secured within the collecting elec-' trode 2 with coincident longitudinal axes, is a discharge electrode, designated generally by the numeral 3, which is constructed and arranged in accordance with my invention.

As illustrated, the discharge electrode includes a metal rod 4 having a button head 5 on its lower end, and positioned at intervals on the rod is a series of thin metal disks 6 which preferably are formed of steel, but which may be copper or other metal.

The. metal disks, as shown in Figs. 1, 2 and 3, have the edges 7 on the periphery of the disks slightly rounded. A central opening 8 is provided in the disks through which the rod 4 extends when the parts are inassembled relation.

In the modified form of disk shown in Figs. 4 and 5, the periphery 10 of the disk is made semi-circular, of a radius equal to one-half the thickness of the disk. In other respects the disk of Figs. 4 and 5 is the same as that of Figs. 1, 2 and 3.

The disks are held in spaced relation by a series of annular washers or separators 11 and the separators, which are formed of porcelain or other insulating material, also are positioned on the rod 4, one between the adjacent ends of adjoining disks 6, the sepa rators being made slightly smaller in diameter than the thin metal disks. When the electrode is to be used in apparatus for cleaning heated gases the separators will be made of a heat-resistin insulating material, such as porcelain. Tn some cases, however, the separators 11, may be made of metal.

The upper end of the rod4 is provided with screw threads and extends through an opening in one end of a horizontal arm 12 by which the discharge electrode 4 is suspended within the opening in the tubular collecting electrode 2. A terminal 13 for one conductor 14 of the circuit also is secured on the threaded upper end of the rod 4, the nut 15 being employed to secure the terminal in place, as well as to rigidly hold the disks 6 and insulators or insulated separators 11 on the rod4 and to fasten the suspended rod on the arm 12. The tubular electrode 2 has a terminal 17 to which one end of a conductor 18 is fastened, the other end of the conductor 18 being grounded, as will readil be understood.

When desired, an ad itional nut may be employed on the threads of the rod at to fasten the disks and insulating separators on the rod independently of the one used to fasten the electrode 3 to the arm 12 and the terminal 13 also may be inde endently secured to the rod 4, when foun necessary or desirable.

In the construction shown in Fig. 6, the metal rod 4 has a series of disks 6 formed ntegrally thereon, the disks being spaced at intervals on the rod, and insulating sleeves 11 which are split lengthwise are positioned on the rod 4 between the adjacent surfaces of adjoining disks, the sleeve sections being fastened together by screws or in any other approved manner. The upper end of the -electr0de of Fig. 6 is threaded and has a nut 1 5 to fasten the electrode in suspended position and to attach the terminal 13 of the conductor14 to the electrode. The periphery of the disks 6 may be rounded as in Figs. 3 or 5, as is found desirable. In the construction of Fig. 7, the electrode is made in sections 1", each section having a disk 6 formed integral thereon and having an externally threaded projection 19 on one end adapted to be screwed into the internally threaded recess 20 in the opposite end of each section. The peripheral edges of the dlsks 6" are rounded as in Figs. 3 or 5 and an annular sleeve or separator 11 formed of insulating material is placed on the body portion of each section of the electrode so as to engage with the faces of the disks on adoining sections thereof. A special section21 on one end of the rod has a recess 20 in one end and the screw threaded end of this special section has a nut 15 for fastening the electrode in suspended position and for attachlng the terminal 13 of a conductor 14.

In the electrode of Fig. 8 annular disks 6 having integral bosses 22 on each side thereof are positioned on therod 4, the bosses acting to space the disks on the rod. Between adjacent disks 6are annular sleeves 11 formed of insulating material. The rod 4 has a head 5 on one end and the nut 23 on the threaded end of the rod holds the parts in assembled relation. The nut 15 on the threaded end of the rod 4 serves to hold the electrode in place and to fasten the terminal 13 to the electrode.

The operation of m improved electrode, when constructed as s own, will be readily understood. It will be seen that one end (the upper end as shown), of the tubular collecting electrode 2 will be connected to a gas supply main, through which the dust laden gases are conducted to the precipitating apparatus. x

The discharge electrode 3 is rigidly suspended within and in axial alinement with the tubular collecting electrode 2, being supported from the arm 12 within the dust catcher above the upper end of the collecting electrode.

The gases to be cleaned pass through the annular electrode 2 and when current is turned on there will be corona discharge extending from each of the thin metal disks 6 or 6, etc., of the discharge electrode to the wall of the collecting electrode 2 and the particles of dust or other finely divided solids in the gases will be violently thrown against the surfaces of the collecting -elec trode and in this way be removed from the path of the movin column of gases passing through the co lecting electrode.

The advantages of my invention will be readily understood by those skilled in the art.

Owing to-the rigid construction of my improved discharge electrode it is easily maintained in axial alinement with the collecting electrode. The insulated separators maintain the metal disks in position on the rod forming part of the discharge electrode, and also act to prevent corona leakage from the rod, while the electrode is not affected by heated combustible gases such as blast furnace gases.

Modifications in the details of the construction and arrangements of parts forming my improved electrode may be made without departing from my invention as defined in the appended claims' I claim 1. The combination with a tubular collecting electrode, of a discharge electrode in axial alinement with said tubular electrode, said discharge electrode comprising a metal rod with a plurality of metal disks fastened in spaced relation on said rod, and with the peripheral edges of said disks rounded to increase the discharge surface of said edges.

2. The combination with a tubular collecting electrode, of a discharge electrode in axial alinement with said tubular electrode,

said discharge electrode comprising a metal rod with a plurality of metal disks, an lIlSlllating sleeve betweensaid disks, and means for fastening the disks and sleeves in assembled relation on said rod, the peripheral edges of said disks being rounded-to increase the discharge surface of'said edges.

3. The combination with a tubular collecting electrode, of a' discharge electrode in axial alinement with said tubular electrode, said discharge electrode comprising a metal rod with a plurality of metal disks, an insulating sleeve between said disks, and means for fastening the disks and sleeves in assembled relation on said rod, said disks 15 being of greater diameter than the insulating sleeves and the peripheral edges of said disks being rounded to increase the discharge surface of said edges.

In testimony whereof I have hereunto set 20 m hand.

HUGH B.- OONOVER. 

